My wife and I have not had a microwave oven in the house for years. Everything is much better cooked on stovetop, oven or grill. Even heated up. For example, compare reheated pizza in microwave vs reheated pizza in oven. There is no comparison. The reheated oven pizza tastes just like when you got it. The microwave reheated pizza is a disgusting, soggy mess.
Microwaved cold coffee is just fine.
The polar aspect of water spreads the heat around just fine.
My family is shocked I do not own a microwave. I prefer my counter top convection oven.